I've Got a Secret — H.D. Thomson

Skye plays a dangerous cat and mouse game with David, exposing a secret he's hidden all his life. But because of Skye's recklessness and need to outmatch David in a mental duel, she exposes them to someone else with questionable motives. Are they friend or foe? Neither know, but Skye does know she's now created a dangerous adversary in David. David wants Skye out of his life. Her demands, blackmailing and insistence that they have a shared childhood are crazy. He isn't about to let her problems ruin his own life. But when she goes too far, David decides to fight back and uncover the truth behind Skye's lies. He'll use sex as a weapon. He knows she's attracted to him and he's more than willing to use it against her.